We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Subject / Started by Last post
3 Replies
1383 Views
Last post February 09, 2016, 2029 UTC
by ChrisSmolinski
3 Replies
959 Views
Last post August 23, 2024, 2312 UTC
by N2MLP
0 Replies
615 Views
Last post June 04, 2025, 1530 UTC
by Ron Hunsicker
9 Replies
1775 Views
Last post February 06, 2021, 1824 UTC
by TRI International
7 Replies
2054 Views
Last post November 03, 2012, 2208 UTC
by aurora
7 Replies
1835 Views
Last post April 10, 2018, 1403 UTC
by ChrisSmolinski
10 Replies
3062 Views
Last post October 15, 2012, 2229 UTC
by RJ
8 Replies
2425 Views
Last post October 05, 2013, 1905 UTC
by ChrisSmolinski
9 Replies
2003 Views
Last post December 15, 2020, 2249 UTC
by flexoman61
1 Replies
984 Views
Last post November 08, 2015, 0011 UTC
by ChrisSmolinski
6 Replies
2077 Views
Last post August 15, 2015, 1731 UTC
by ChrisSmolinski
2 Replies
1237 Views
Last post December 05, 2014, 1358 UTC
by ChrisSmolinski
3 Replies
1458 Views
Last post February 03, 2016, 2013 UTC
by Oliver
0 Replies
914 Views
Last post December 27, 2012, 0121 UTC
by Ron Hunsicker
1 Replies
757 Views
Last post June 07, 2023, 0108 UTC
by N2MLP
1 Replies
348 Views
Last post July 03, 2025, 1449 UTC
by AlexRadioDX
0 Replies
1088 Views
Last post March 03, 2013, 2319 UTC
by Ron Hunsicker
2 Replies
1295 Views
Last post May 28, 2013, 1150 UTC
by Sealord
0 Replies
281 Views
Last post June 20, 2025, 1828 UTC
by Ron Hunsicker
7 Replies
1709 Views
Last post June 18, 2018, 2146 UTC
by flexoman61

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns